Describe the way of life of sponges
Describe the way of life of sponges?
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Sponges live entirely in an aquatic environment and they are joined by their base to a substrate (that is, fixation ground). Sponges are filtering animals; they nourish themselves from nutrients which enter their atrium brought in by water.
Why is it not correct to affirm that DNA self-reproduces?
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Whether there was molecular oxygen within the earth's primitive atmosphere? How that molecule has become abundant?
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Which events mark the beginning and end of third interphase period? What take place in the cell during this period?
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Write down the main cellular functions of potassium?
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State the chemical equation explaining the formation of bicarbonate from the carbon dioxide and water? What enzyme is responsible for catalyzing this reaction?
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